[welcome mat] {n.} 1. A mat for wiping your shoes on, […]

[wet behind the ears] {adj. phr.}, {informal} Not experienced; not knowing […]

[wet blanket] {n.}, {informal} A person or thing that keeps others […]

[whale away] {v.}, {informal} 1. To beat or hit hard; strike […]

[what for] (2) {n. phr.}, {informal} A scolding, or other punishment. […]

[what have you] or [what not] {n. phr.}, {informal} Whatever you […]

[what of it] or [what about it] {interj.}, {informal} What is […]

[what's the big idea] or [what's the idea] {informal} What is […]

[what's what] or [what is what] {n. phr.}, {informal} 1. What […]

[when the chips are down] {adv. cl.}, {informal} When the winner […]