tap smb on the shoulder
1tap — I n. 1) on tap ( ready to be drawn ) (beer on tap) 2) on tap ( available ); ( imminent ) (what s on tap for tonight?) 3) see faucet II v. 1) (d; tr.) ( to ask ) to tap for (to tap smb. for information) 2) (D; tr.) to tap on ( to strike lightly )… …
